Ignition-tester.



J. L EAST, JR. lGNlTlON TESTER. APP'LXCATRON FILED JUNE 19. \917.

Patented Sept. 1'7, 1918.

1 Yonicntly cnrric engine; to also provulu hug nosed means To (222' wi'iom may concern:

Be it known that 1. JOHN L. Enis'r, S12, 21 c1t1zen of the ifnitcil States. rosuhngg' at {,leuulell, in the county of C1: ll

the prose-us non-l moans for opcruhlv rcceiving and support iug u plurality of spark plugs which are in circuit with the supporting: mean with the timer of :1 motor whicle u it mechanic while turning the engine sh Y ill be able to obso as to :ctuutc the timer serve the actuation of l cusilv :lctcnninin the C2 the cosine cylinders gene tive snarl; nlugs it is 2111 additional and 9111 objecfa of the present line struct the supporting 11mins plugs 111a he readily testcil in laced in an enuinew Tho invention as a further improvementconsists in the provision of novel means for piYo-tully connecting the spark plug supporting l) 'ucl-Ie s on {he louse whereby to porinit of tho folding of the hruckc s against the thus placing the llovico m a coinpuct form in ordcr tha 3111113 c in a tool X of a motor he spark plugs, ti 11150 of )UlSilllilf}:

, v iull clue to inconcvehicle.

It is :1 more specific olJ- cct of the 1 provide improved i" invention arms on tho naso for engagement W assuring of tho umiutcnuncc of? the supp i in 2111uprightposition,

ie other aim: and object-s ouuy he rec l the provi- 1 clmrnoter uuuitiouoi'l :uul in which the the camstructiou low znul the nor til present invention 1 sum or a ihwico o1 with a YlGIV to connmclnoss, number ol on?" simple, the cost cllicioucy high.

Other imprownuents :uul novel 1lotui the oonstrmrtion and arrangement of :1 various parts of the nppnratu will be brought outmore in detail in tho description s Eatent.

llu and a 11 out clepa l i tion or otliment of the present lustratetl in the acj n whiollr- 1 A we of the device em- 1? the prssent invent-ion.

*i 2 is an enlurgei transverse section wcts being; shown in elevation, and

g'nrc S is :1 fragmentary top plan of 1 characters of reference are cm- :1 all of lhe above (loscribed'views to n1 :icut :orrosponiling parts 1 licicrriz no: more particularly, to the uccoinpunfiig (lruwi11 there is provided :111 clongntec relatively flat, rectangular supporting i 1 formed of conducting material and p 'o\'i1lcd adjacent one marginal edge with spaced longituclinally extending 11love 'l through the base, the supporting slots in 021th of which is plvotzilly and slidably connected ill integral pair ofspaced non :o1ul11ct-i11g attaching arms 2 through the instruincitulity of suitable fastening devices and. nose arms are adopted for engil iijclllclli with an engine, as is apparent. It will be :rozulily appreciated that the con struetion of theSe arms will very when 0111 plo oil onx 'lferent types oilniotors. Formed inn g 'ul who the upper surface of the base are plurality of uniformly spaced ears 3.

ll .h 1 E'HBW to "uni providing improved uuivuhly supporting; the spark o is employed at plurality of mshupcil support'mg brackets inch- 1111i formed of conducting nmterial. Each of ihcso brackets cousnets of a long portion in their entirety by the numeral 4.

Spark plugs clamping arms 10 may be readily carried in a tool box of a motor vehicle. In order to maintain the brackets in an upright position lugs 8 extend from one side adjacent the ears 6 and con tact with the base 1 so as to limit swinging movement and maintain the brackets in an upright position. The outer portions 9 of the brackets at terminate in opposed arcuate and resilient clamping arms 10 the outer ends of which are bent outwardly to provide guides 11. As will be appreciated upon reference to Fig. 2 the clamping arms 10 are positioned beyond the vertical plane of the adjacent marginal edge of the base. 12 are insertible between the guides so as to be engaging and supported by the arcuate arms 10.

Each of the spark plugs is electrically e0nnected to a timer 13. In accomplishing this purpose a conducting wire 1 L extends from the top of each spark plug and is connected to one of the plurality of uniformly spaced contact arms 15 on the outer edge of the base of the timer 13. The timer of course is of any suitable construction employed on motor vehicles and of course is adapted to be operated during the actuation of the engine bf the motor vehicle. A conducting wire 16 has one end connected to the base 1 and the opposite end operably connected to a contact arm 17 rotatably each of the contact points during rotation. A battery or other source of energy 18 is interposed in the conducting wire 16 and because of the connection between the pertions of the supporting brackets 5 with the ears as well as the connection between the and the spark plugs 12, it will be appreciated that when the drive shaft of an engine (not shown) is turned the timer will be rotated so as to successively engage each of the contact points 15 and close the circuit whereupon if the spark plugs are in good condition the spark will jump the gap during the time the arm 16 contacts with each of the contact points 15.

mounted on the timer and arranged to successively engage If the spark fails to jump the gap in any of the spark plugs the mechanic or other person testing the spark plugs will know at a glance that one of the cylinders of the m0- tor is misfiring. It will also be appreciated that by the making of a few slight modifications the present device can be used for testing spark plugs in a shop or at a factory.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, and it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limited sense. It is also to be understood that the language used in the following claim is intended to cover all the generic and specific features of theinvention herein described and all statements of the scope of the inventiomiwhieh, as a matter of language might be said'to'fall therebetween Having thnsfully described thl s invention, what is claimed as may and desired to be secured by Letters Patent is A device'of the character described ineludin'g' an' elongated relatively flat rectangular supporting baserformcd' of conducting metal, m c-ans for attaching the base to a suitablesuppoi t, a pluralitypf ears formed integral with the upper surface of the base at uniformly spaced intervals, a plurality of L-shaped brackets the outer ends of the long portions of which are pivotally connected to the ears, lugs formed on the inner ends of the long portions and cooperating with the base for maintaining the brackets in an upright position, the brackets being foldable at times to lie upon the base when not in use, and opposed clamping arms formed on the outer ends of the other portion of each of the brackets for receiving and supporting a spark plug.

In testimony whereof I affiX my signature.

JOHN L. EAST, JR. 

